Multiple Xiaomi BLE Temperature Sensor with Single NodeMCU

[KCYeoh (Yeoh)]

Hi, I would like to add temperature and humidity sensors to multiple rooms and integrate to HA through NodeMCU.

So the question is, can I have single NodeMCU to get the data from multiple BLE sensors?

[tom_l]

Yes you can.

[jaddel]

I have currently 6 sensors with one BLE tracker hub. Some thermometers are unavailable sometimes since I have more than 4.

Could it help to adjust the scan parameters? Link

I played with the values a bit but had no success.

[orange-assistant (the real one)]

Try this:

Shelly PLUS 1 + ESPHome (+ bletracker)

I had a similar amount of pain getting esp32_ble_tracker working on a Shelly 1 Plus. Including the bonus idiot move of popping it in the wall then realising you had to UART flash when adding ble for the first time. At the moment though, it’s working fine and picks up nearby BLE. The config that seems most stable for me is: esp32: board: esp32dev framework: type: esp-idf version: latest sdkconfig_options: CONFIG_FREERTOS_UNICORE: y ... esp32_ble_tracker: scan_parameters:…

[assembly]

Have you tried putting the thermometers closer to the ESP?
I’ve currently 2 LYWSD03MMC running on a ESP NodeMCU but noticed the range doesn’t cover my entire house (thick walls).

For me, the custom ATC-Mi firmware also worked significantly more reliable than the stock one.
Its worth a try, since the LYWSD03MMC are really easy to flash over the air. There are a couple of very detailed Youtube videos explaining the proces.